まとめ
手術による治療は,重度の左心室機能不全の患者で生存率とアンギナ症状を改善しました. しかし,手術は心不全の症状を和らげることができず,手術リスクも伴います.
科学分野:
- 心臓病学 心臓病学
- 心臓外科手術について
- 心不全管理について
背景:
- 重度の左心室機能不全 (エジェクション分数<0.36) は,心臓ケアにおける重要な課題です.
- 射出分子が悪い患者は,しばしば複雑な冠動脈疾患と併発性疾患を持っています.
研究 の 目的:
- 重度の左心室機能不全を有する患者の外科治療と医療管理の生存と症状的利点の評価.
- 外科介入から最も恩恵を受ける患者のサブグループを特定する.
主な方法:
- 重度の左心室機能不全を有する651人の患者 (420人の医療,231人の外科) の遡及的分析.
- アンギナ,心不全の症状,冠動脈疾患の重症度,左主狭窄症など,ベースラインの特徴の比較.
- 生存率と予後要因を評価するための多変量回帰分析.
主要な成果:
- 手術を受けた患者は,より重度のアンギナ,冠動脈疾患,左側主要病変を患ったが,心不全の症状がより少ない.
- 多変量分析は,手術による治療が生存期間を延長することを示したが,心臓機能不全の重度や年齢などの要因よりも低い.
- 射出分数<0.26の患者は,手術で5年生存率が63%であったが,治療で43%であった.
- 手術はアンギナの症状を緩和したが,心不全の症状には効果がなかった.
結論:
- 主に不全性疼痛症状と重度の左心室機能不全を有する患者は,手術による治療が有益である.
- 手術の利点は,射出分子が0.26.0未満の患者に最も顕著です.
- 手術後の死亡率は慎重に検討し,理想的には,研究の6.9%の率に匹敵するか改善する必要があります.
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